Read the full story from NPR.
The hulking C-17 is the pack mule of the United States military, designed to lift and transport troops, tanks and even helicopters. Every American C-17 pilot is trained at the Altus Air Force Base in southwestern Oklahoma, where flight instructor Adam Bergoo says a key lesson is how to fly close to the ground.
“That’s one of our military missions, is to fly low-level, because that basically reduces the risk of detection, and getting shot at by the bad guys,” he says.
The western part of Oklahoma has been ideal for this because the skies are wide open. But Bergoo says one of his training routes is now partially blocked by a wind farm.